Why Don't We See Miracles Today?

In this episode, Dr. Betters answers the question, "Dr. Betters As I read through word of God I find it very pleasing and hopeful. Although I'm curious as to why we do not see more miracles by those who walk with God as the disciples and apostles performed. For the Bible says Truly Truly I say to you. Whoever believes in me will also do the work that I do, and greater works than these will he do because I am going to the Father. Also, he says if you have faith as a grain of mustard seed, you will say to this mountain, Move from here to there; and it will move, and nothing will be impossible for you. There are many more miracles of raising the dead, casting demons out, healing blindness, walking on water, healing the crippled instantly by normal people with faith. It seems odd to me that more than ever in this day and age how beneficial it would be to bring more people to Jesus Christ.